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- catalog contributor b8502674.
- catalog contributor b8502675.
- catalog date "1940".
- catalog description "Sponsored by the Department of Labor and Industry and Community Safety Councils.".
- catalog extent "4 v.".
- catalog issued "1940".
- catalog language "eng".
- catalog publisher "Philadelphia.".
- catalog subject "Accidents Prevention Congresses.".
- catalog subject "Occupational diseases Congresses.".
- catalog title "Proceedings.".
- catalog type "text".